Speaker



FIG. 1 is a front view of a speaker showing my new design;

FIG. 2 is a rear view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is the front view showing the speaker in a turning position; and,

FIG. 8 is the right side view showing the speaker in a turning position. 

The ornamental design for a speaker, as shown and described. 